ChemistryCode 9701

Redox processes: electron transfer and changes in oxidation number (oxidation state)

What this topic asks you to be able to do

  • determine the oxidation numbers that elements take on within compounds and ions
  • apply changes in oxidation numbers to aid the balancing of chemical equations
  • explain the terms redox, oxidation, reduction and disproportionation through the transfer of electrons and changes in oxidation number, and use these terms
  • explain what an oxidising agent and a reducing agent are, and use both terms
  • use a Roman numeral to show how large an element's oxidation number is